KR20220090007A - Artificial cervical disc and the construction method thereof - Google Patents

Abstract

The present invention relates to a cervical artificial disc and a method for constructing the same, and when designing a cervical artificial disc applied to a patient in need of cervical artificial disc replacement, a plurality of landmarks are designated to allow the cervical artificial disc to be inserted. The present invention relates to a cervical artificial disc in which the space is modeled and the cervical artificial disc is designed based on the available space modeling, and a method for configuring the same.

Description

Cervical vertebrae artificial disc and its construction method

The present invention relates to a cervical artificial disc and a method for constructing the same, and more particularly, when designing a cervical artificial disc applied to a patient in need of cervical artificial disc replacement, a plurality of landmarks are designated to the cervical artificial disc. The present invention relates to a cervical artificial disc in which an available space to be inserted is modeled, and the cervical artificial disc is designed based on the available space modeling, and a method for configuring the same.

In general, the spine includes cervical (neck), thoracic (spine), lumbar (lumbar), sacral (pelvic), and coccyx (tailbone), and includes 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 5 sacrum, It consists of 33 vertebrae with 4 coccyx.

There is an intervertebral disc (disk) between each vertebra of the cervical, thoracic, and lumbar vertebrae, and the intervertebral disc is made of fibrocartilage rich in elasticity in a thick disc shape, and the annulus fibrosus surrounds the nucleus pulposus.

However, the disks that connect the vertebrae to each other in the neck or waist, etc., cause degenerative changes as they age, resulting in a decrease in elasticity, and a decrease in the amount of water that causes wear or cracks in the disk, which results in loss of its main function, a cushioning function.

In this way, when the function of the disc is lost, it causes pain, and if it progresses further, the fibers are severely stretched or ruptured, pressing the nerve located at the back and causing pain in the pelvis and legs, and then the interval between the vertebrae gradually narrows or the spine As the bones sink, the spine deforms and causes various diseases related to the spine.

The existing artificial disc was not customized for the patient, so there was no need to base the design itself on the patient's actual image. In other words, in the case of a ready-made product, the design of the disc itself is not necessary, and the degree of operation plan needs to be checked. However, when trying to utilize a patient-specific disc, an efficient design is required because detailed disc modeling is required every time.

Therefore, in the present invention, when designing a cervical artificial disc, the space of the A-space into which the cervical artificial disc will be inserted is modeled using a plurality of landmarks, and a cervical artificial disc suitable for the modeled A-space is easily designed. We would like to suggest a way to do it.

In particular, the present invention sets 7 landmarks in the cranial (cranial, skull) direction of the upper part of the upper unit cervical vertebra in the skull direction in a specific joint (two unit cervical vertebrae and the disc between them), and the spine A method for modeling the space of A-space into which the cervical artificial disc will be inserted is proposed by setting 10 landmarks in the direction of the caudal (caudal, coccyx) direction of the lower unit cervical vertebrae.

Next, the prior art existing in the technical field of the present invention will be briefly described, and then the technical matters that the present invention intends to achieve differently from the prior art will be described.

First, Korean Patent No. 1137991 (2012.04.12.) relates to a method for manufacturing an image-based patient-tailored medical type spinal implant and the spinal implant. In order to solve the problem, a method for manufacturing an image-based patient-customized medical spinal prosthesis and a method for manufacturing an image-based patient-customized medical spinal prosthesis that is made of a polymer-based material and operated on a spinal prosthesis tailored to the individual vertebral shape of each patient that can be inserted by introducing an image of the patient to solve the problem is about

That is, the prior art proposes a biocompatible polymer-based implant to overcome the disadvantage that the existing implant is metallic, so that the biocompatible polymer is used, so that rejection from the patient can be reduced, and it can be inserted without driving a screw into the spine. Because it has a structure, it describes a spinal implant that provides a minimally invasive surgical method.

On the other hand, the present invention uses a plurality of landmarks to model the space of A-space into which the cervical artificial disc is to be inserted, and to easily design a cervical artificial disc suitable for the space-modeled A-space, The difference in technical configuration between the prior art and the present invention is clear.

In addition, Korean Patent No. 1936780 (2019.01.11.) relates to a patient-tailored implant design and manufacturing system for correcting spinal deformity and a method for controlling the same. It relates to an implant design and manufacturing system for correcting spinal deformity tailored to the patient and a method for controlling the same, which reduces the error of spinal deformity and the trial and error process that surgeons may face by designing and manufacturing an optimized implant that provides it to surgeons.

That is, the prior art performs virtual spinal deformity correction by introducing computer simulation using computational mechanics methods such as finite element method in the pre-operative planning stage, and searches for implants that fit the patient's spine through the simulation results. It describes a system for building procedures that can be designed and produced, and a control method thereof.

However, the present invention uses 7 landmarks set in the upper cranial direction and 10 landmarks set in the lower coccyx direction to model the space of the A-space into which the cervical artificial disc will be inserted, and the space Since it is to easily design a cervical artificial disc suitable for the modeled A-space, there is a significant difference in configuration between the prior art and the present invention.

The present invention was created to solve the above problems, and it is an object of the present invention to use a plurality of landmarks to model the space of A-space into which the cervical artificial disc will be inserted.

Another object of the present invention is to enable the design of the cervical artificial disc with a height, length, width, shape, or a combination thereof corresponding to the A-space modeled using a plurality of landmarks.

In addition, the present invention sets 7 landmarks in the upper cranial direction, and sets 10 landmarks in the lower caudal direction, thereby creating a space for the A-space in which the cervical artificial disc will be inserted. To be able to model it serves another purpose.

Another object of the present invention is to design a customized cervical artificial disc for each patient performing cervical artificial disc replacement surgery.

Cervical artificial disc according to an embodiment of the present invention, a cranial plate coupled to the upper unit cervical vertebrae; a caudal plate coupled to the lower unit cervical vertebra; and an artificial disk member coupled between the cranial plate and the nose plate to support a longitudinal load, wherein the cranial plate, the nose plate and the artificial disk member are implanted with a cervical artificial disk represented by a plurality of landmarks. It is characterized in that it is formed based on the available space to be used.

In addition, the landmark is, the cranial anterior center, cranial anterior right and cranial anterior left are set at the center and left and right of the front perimeter of the upper unit cervical vertebrae, and the cranial apex is set at the center of the upper unit cervical vertebrae, , cranial posterior center, cranial posterior right, and cranial posterior left are set in the center and left and right of the rear outer side of the upper unit cervical vertebra; The caudal anterior center, caudal anterior near right, caudal anterior far right, caudal anterior near left, and caudal anterior far left are set at the center and left and right of the anterior outer part of the lower unit cervical vertebrae, and the rear of the lower unit cervical vertebrae It is characterized in that caudal posterior center, caudal posterior near right, caudal posterior far right, caudal posterior near left, and caudal posterior far left are set in the center and left and right of the outside.

In addition, the available space, as a space defined by the plurality of landmarks, is a space between two unit cervical vertebrae in which the cervical artificial disc is implanted (A-space), and the cranial anterior center, cranial anterior right , cranial anterior left, cranial posterior center, cranial posterior right and cranial posterior left with a line connecting the cranial edge line (cranial edge line); a cranial center line that is a left and right center line of the cranial plate connecting the cranial anterior center, the apex center, and the cranial posterior center with a line; an apex height that is the distance between the cranial center line and the apex center; a caudal edge line connecting the caudal anterior near right, caudal anterior center, caudal anterior near right, caudal posterior near right, caudal posterior center and caudal posterior near left to a line (caudal edge line); The caudal anterior center and the caudal posterior center are connected by a line to the left and right center lines of the caudal plate, the caudal center line; The caudal wing connecting the caudal anterior near right and caudal anterior far right, the caudal anterior near left and caudal anterior far left, the caudal posterior near right and caudal posterior far right, and the caudal posterior near left and caudal posterior far left with a line line (caudal wing line); a caudal wing angle, which is an interior angle of the vertex of the center of the triangle with the caudal wing line as the hypotenuse; And the caudal anterior near right, caudal anterior far right, caudal posterior far right, and caudal posterior near right, and the caudal anterior near left, caudal anterior far left, caudal posterior far left and caudal posterior near left are connected by a line to the caudal posterior near left. It is characterized in that it includes; a wing plate (caudal wing plate).

In addition, the nose wing angle allows the nose plate to be positioned at the left and right centers of the artificial cervical vertebrae when implanting the nose plate on the unit cervical vertebrae, and the nose wing plate is configured to install the nose plate on the unit cervical vertebrae. When doing this, it is characterized in that the cervical artificial disc is not rotated through friction with the surface of the unit cervical vertebrae.

In addition, the cranial plate is manufactured to have a size that can cover the body of the upper unit cervical vertebrae, thereby preventing the cranial plate from being depressed in the corresponding unit cervical vertebra to which the cranial plate is attached, or a portion of the corresponding unit cervical vertebra body. It is characterized in that it prevents bleeding that occurs due to failure to cover.

In addition, the method of constructing an artificial cervical vertebrae disc according to an embodiment of the present invention comprises: forming a cranial plate for coupling to an upper unit cervical vertebra; forming a caudal plate for coupling to the lower unit cervical vertebra; and forming an artificial disk member coupled between the cranial plate and the chordal plate to support a longitudinal load, wherein the cranial plate, the koddle plate and the artificial disk member are represented by a plurality of landmarks It is characterized in that it is formed based on the available space in which the cervical artificial disc will be implanted.

In addition, the configuration method sets the landmarks of the cranial anterior center, cranial anterior right, and cranial anterior left at the center and left and right of the front periphery of the upper unit cervical vertebrae, and cranial apex at the center of the upper unit cervical vertebrae. setting landmarks of, and setting landmarks of cranial posterior center, cranial posterior right and cranial posterior left at the center and left and right of the rear outskirts of the upper unit cervical vertebrae; And set landmarks of caudal anterior center, caudal anterior near right, caudal anterior far right, caudal anterior near left and caudal anterior far left in the center and left and right of the front outer edge of the lower unit cervical vertebrae, and the lower unit Setting the landmarks of the caudal posterior center, caudal posterior near right, caudal posterior far right, caudal posterior near left, and caudal posterior far left in the center and left and right of the rear outskirts of the cervical vertebrae; characterized in that it further comprises.

In addition, the available space, as a space defined by the plurality of landmarks, is a space between two unit cervical vertebrae in which the cervical artificial disc is implanted (A-space), and the cranial anterior center, cranial anterior right , forming a cranial edge line (cranial edge line) by connecting the cranial anterior left, cranial posterior center, cranial posterior right and cranial posterior left with a line; connecting the cranial anterior center, the apex center, and the cranial posterior center with a line to form a cranial center line, which is a left and right center line of the cranial plate; forming a height between the outer edge of the cranial center line and the apex center with reference to an apex height between the cranial center line and the apex center; forming a caudal edge line by connecting the caudal anterior near right, caudal anterior center, caudal anterior near right, caudal posterior near right, caudal posterior center and caudal posterior near left to a line; connecting the caudal anterior center and the caudal posterior center to a line to form a caudal center line, which is a left and right center line of the caudal plate; The caudal anterior near right and caudal anterior far right, the caudal anterior near left and caudal anterior far left, the caudal posterior near right and caudal posterior far right, and the caudal posterior near left and caudal posterior far left are connected with a line to wing the caudal wing forming a caudal wing line; confirming a caudal wing angle that is an interior angle of a center-side vertex of a triangle with the caudal wing line as a hypotenuse; And the caudal anterior near right, caudal anterior far right, caudal posterior far right and caudal posterior near right, and the caudal anterior near left, caudal anterior far left, caudal posterior far left and caudal posterior near left are connected with a line to form a square nose By performing; forming a wing plate (caudal wing plate), characterized in that formed.

In addition, the nose wing angle allows the nose plate to be positioned at the left and right centers of the artificial cervical vertebrae when implanting the nose plate on the unit cervical vertebrae, and the nose wing plate is configured to install the nose plate on the unit cervical vertebrae. When doing this, it is characterized in that the cervical artificial disc is not rotated through friction with the surface of the unit cervical vertebrae.

In addition, in the step of forming the cranial plate, the cranial plate is manufactured in a size that can cover the body of the upper unit cervical vertebra, thereby preventing the cranial plate from being depressed in the corresponding unit cervical vertebra to which the cranial plate is attached. , it is characterized in that it prevents bleeding caused by not covering a part of the corresponding unit cervical vertebra body.

As described above, according to the cervical artificial disc and its configuration method of the present invention, the space of the A-space into which the cervical artificial disc is to be inserted is modeled using a plurality of landmarks, and the cervical artificial disc suitable for the modeled A-space is used. By making it easy to design, there is an effect that a cervical artificial disc customized for each patient can be manufactured, unlike a ready-made product, through modeling of the A-space into which the cervical artificial disc is inserted.

In addition, the present invention makes it possible to precisely design the portion of the plate in contact with the cervical vertebrae of the cervical vertebrae in accordance with the curvature of the cervical vertebrae, thereby making it easy to position the cervical vertebrae artificial disc in the surgical process and cutting the bones to fit the shape. It has the effect of suppressing additional measures as much as possible.

In addition, since the present invention can be applied to the design of artificial discs and artificial joints in various joint areas such as the lumbar spine, knee, and hip, as well as the cervical spine, there is an effect that can be extended to other body parts.

1 is a view schematically showing the structure of the cervical spine of the human body to which the present invention is applied.
Figure 2 is a view showing in detail the structure of the cervical artificial disc according to an embodiment of the present invention.
3 is a view for explaining in detail the A-space represented by a plurality of landmarks used for manufacturing a cervical artificial disc according to an embodiment of the present invention.
4 is a view for explaining in more detail the location of the landmark applied to the present invention.
5 is a view for explaining in detail the structure of an A-space represented by a plurality of landmarks applied to the present invention.
6 is a view for explaining the manufacture of a cervical artificial disc using an A-space represented by a plurality of landmarks applied to the present invention.
7 is a flowchart illustrating in detail an operation process of a method for constructing an artificial cervical vertebrae according to an embodiment of the present invention.
8 is a flowchart illustrating in detail a process of generating an A-space represented by a plurality of landmarks applied to the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the artificial cervical disc and its construction method of the present invention will be described in detail. Like reference numerals in each figure indicate like elements. In addition, specific structural or functional descriptions for the embodiments of the present invention are only exemplified for the purpose of describing the embodiments according to the present invention, and unless otherwise defined, all terms used herein, including technical or scientific terms They have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present specification. It is preferable not to

1 is a view schematically showing the structure of the cervical spine of the human body to which the present invention is applied.

As shown in FIG. 1 , the cervical vertebra of the human body is composed of seven unit cervical vertebrae 1 , and a disk 2 is provided between the unit cervical vertebrae 1 . At this time, if the disc 2 is damaged by wrong posture or movement, aging, disease, etc., it is treated with an artificial cervical disc replacement surgery.

Figure 2 is a view showing in detail the structure of the cervical artificial disc according to an embodiment of the present invention.

As shown in FIG. 2 , the cervical artificial disc 100 used in the cervical artificial disc replacement surgery is a cranial plate 110 , a caudal plate 120 , an artificial disc member 130 , and a stopper. (140) and the like.

The cranial plate 110 is a portion coupled to the unit cervical vertebrae located in the upward direction, and at least one stopper 140 is provided on the upper surface of the cranial plate 110 to strengthen the connection with the unit cervical vertebrae.

The nose plate 120 is a portion coupled to the unit cervical vertebrae located in the lower direction, and at least one stopper 140 is provided on the lower surface to harden the coupling with the unit cervical vertebrae.

At this time, the cranial plate 110 and the nose plate 120 have rounded outer perimeters and corners so that they can move smoothly between the unit cervical vertebrae and not be damaged when in contact with the unit cervical vertebrae. desirable.

The artificial disk member 130 is coupled between the cranial plate 110 and the nose plate 120 to support a longitudinal load.

In this case, the artificial disk member 130 may be formed of various materials such as polymers and metals.

Here, the cranial plate 110 , the nose plate 120 , and the artificial disk member 130 have a height corresponding to the A-space, which is an available space represented by a plurality of landmarks (eg, the height of the cranial plate 110 ). The distance between the upper apex and the lower apex of the chord plate 120), length (eg, the width of the major axis), width (eg, the width of the minor axis), shape (surface or edge), or a combination thereof. formed in the most suitable form.

Also, the stopper 140 may not fall within the range of the A-space, and is for fixing the cervical artificial disc to the upper and lower cervical vertebrae.

That is, the present invention sets a plurality of landmarks in a medical image of a specific patient when manufacturing the cervical artificial disc 100, models the space into which the A-space will be inserted based on the set landmarks, and the space modeling The most suitable height for one A-space (eg, the distance between the upper apex of the cranial plate 110 and the lower apex of the chordal plate 120), length (eg, the width of the major axis), and the width (eg the width of the minor axis) , to design a cervical artificial disc with a shape (surface or edge) or a combination thereof. Accordingly, according to the present invention, it is possible to design a customized cervical artificial disc for each patient performing cervical artificial disc replacement surgery.

As described above, the configuration of the landmark and the A-space used when manufacturing the cervical artificial disc of the present invention will be described in more detail with reference to FIGS. 3 to 6 as follows.

3 is a view for explaining in detail the A-space represented by a plurality of landmarks used for manufacturing a cervical artificial disc according to an embodiment of the present invention.

As shown in FIG. 3 , the A-space 300 is a space defined by a plurality of landmarks 200 , and is a space between two unit cervical vertebrae 1 in which the cervical artificial disc 100 is implanted. is modeled. That is, when one cervical artificial disc 100 is designed, it means a space defined by limits on its size and shape, and has a left-right symmetrical structure.

At this time, since the A-space 300 is different for each patient and each surgical site, when the cervical artificial disc 100 is manufactured by modeling the A-space 300 in the method proposed in the present invention, the conventional It is possible to solve the problems of lowering the possibility of successful surgery, increasing the difficulty of the operation, and lowering the satisfaction of the patient, which occurred due to the use of a cervical artificial disc of a uniform design.

4 is a view for explaining in more detail the location of the landmark applied to the present invention.

As shown in Fig. 4, the landmark 200 is set to secure an area to sufficiently cover the unit cervical vertebrae of the surgical site, and to guide the implantation according to the center line, the upper cranial Seven are set in the unit cervical vertebra in the (cranial) direction, and 10 are set in the unit cervical vertebra in the lower caudal direction. In addition, the A-space 300 into which the cervical artificial disc 100 will be inserted is three-dimensionally modeled by a total of 17 landmarks 200 .

That is, the landmark 200 is a cranial anterior center, cranial anterior right, and cranial anterior left respectively set at the center and left and right of the front periphery of the upper unit cervical vertebrae, and cranial apex at the center of the upper unit cervical vertebrae. is set, and the cranial posterior center, cranial posterior right, and cranial posterior left are respectively set at the center and left and right of the rear outer part of the upper unit cervical vertebra.

In addition, the landmark 200 is set at the center and left and right of the front outer edge of the lower unit cervical vertebrae, caudal anterior center, caudal anterior near right, caudal anterior far right, caudal anterior near left, and caudal anterior far left, respectively. and caudal posterior center, caudal posterior near right, caudal posterior far right, caudal posterior near left, and caudal posterior far left are set at the center and left and right of the rear outer part of the lower unit cervical vertebra, respectively.

On the other hand, the landmark 200 is an artificial intelligence learning model that an expert (eg, a doctor, an engineer, etc.) checks a medical image such as a CT image, an MRI image, an X-ray image, and sets it directly on the surgical site or creates in advance can be automatically estimated from the medical image of the user scheduled for surgery.

5 is a view for explaining in detail the structure of an A-space represented by a plurality of landmarks applied to the present invention.

As shown in FIG. 5 , the A-space 300 has a cranial edge line 310 , a cranial center line 320 , and an apex height 330 . ), caudal edge line (caudal edge line) 340, caudal center line (caudal center line) (350), caudal wing line (caudal wing line) (360), caudal wing plate (caudal wing plate) (370), It is configured to include a caudal wing angle and the like.

The cranial edge line 310 is a portion connecting the cranial anterior center, cranial anterior right, cranial anterior left, cranial posterior center, cranial posterior right and cranial posterior left among the landmarks 200 with a line, and the cervical artificial disc (100) means the maximum size of the cranial plate 110.

More specifically, the cranial plate 110 of the cervical artificial disc 100 should be designed to have a size that can cover the body of the unit cervical vertebra as much as possible. Because, if the cranial plate 110 is made small, the cranial plate 110 is depressed in the corresponding unit cervical vertebra to which the cranial plate 110 is attached, so that it cannot function normally, or the unit cervical vertebra body. This is because bleeding occurs as it does not cover a portion of the

The cranial center line 320 is a left and right center line of the cranial plate 110 that connects the cranial anterior center, the apex center, and the cranial posterior center among the landmarks 200 with a line.

The apex height 330 is a distance between the cranial center line 320 and an apex center of the landmark 200 .

The nose edge line 340 is a portion connecting caudal anterior near right, caudal anterior center, caudal anterior near right, caudal posterior near right, caudal posterior center, and caudal posterior near left among the landmarks 200 by lines.

The nose center line 350 is a left and right center line of the nose plate 120 connecting the caudal anterior center and the caudal posterior center among the landmarks 200 with a line.

The caudal wing line 360 is among the landmarks 200, caudal anterior near right and caudal anterior far right, the caudal anterior near left and caudal anterior far left, the caudal posterior near right and caudal posterior far right, and the caudal It is the part connecting the posterior near left and the caudal posterior far left with a line.

The caudal wing plate 370 is the caudal anterior near right, caudal anterior far right, caudal posterior far right and caudal posterior near right, and the caudal anterior near left, caudal anterior far left, caudal posterior among the landmarks 200 . It is a rectangular part connecting the far left and the caudal posterior near left with a line.

The nose wing angle is an interior angle of the center-side vertex of a triangle with the nose wing line 360 as a hypotenuse.

On the other hand, the nose wing angle serves to position the nose plate 120 on the unit cervical vertebrae 1 to be positioned at the left and right centers of the artificial cervical vertebrae 100 .

In addition, when the nose wing plate 370 is implanted in the unit cervical vertebra 1, the cervical vertebra artificial disc 100 is formed through friction with the surface of the unit cervical vertebra 1 . It serves to prevent rotation.

6 is a view for explaining the manufacture of a cervical artificial disc using an A-space represented by a plurality of landmarks applied to the present invention.

As shown in FIG. 6, the present invention sets a plurality of landmarks 200 from a medical image of a specific patient in an apparatus for designing a cervical artificial disc, and A- consisting of the plurality of landmarks 200 The space 300 is three-dimensionally modeled. And, through the three-dimensional modeling 300, the A-space 300, the cervical vertebrae artificial disc 100 of the most suitable shape and size can be manufactured.

That is, by 3D modeling the A-space 300 using 7 landmarks set in the upper (cranial) unit cervical vertebrae and 10 landmarks set in the lower (caudal) unit cervical vertebrae, cervical vertebrae customized for each patient It is to enable the design of the artificial disc 100 .

Next, an embodiment of the method for constructing an artificial cervical vertebrae according to the present invention configured as described above will be described in detail with reference to FIGS. 7 and 8 . At this time, the order of each step according to the method of the present invention may be changed by the environment of use or by those skilled in the art.

7 is a flowchart illustrating in detail an operation process of a method for constructing a cervical artificial disc according to an embodiment of the present invention, and FIG. 8 is a process for generating an A-space represented by a plurality of landmarks applied to the present invention in detail It is a flowchart shown.

7, in order to configure the cervical artificial disc 100 according to an embodiment of the present invention, first, a plurality of landmarks 200 from the user's medical image in the device for designing the cervical artificial disc should be set

At this time, the landmark 200 is set to seven including cranial anterior center, cranial anterior right, cranial anterior left, cranial apex, cranial posterior center, cranial posterior right and cranial posterior left in the upper unit cervical vertebrae (cranial vertebrae), caudal anterior center, caudal anterior near right, caudal anterior far right, caudal anterior near left, caudal anterior far left, caudal posterior center, caudal posterior near right, caudal posterior far right, caudal posterior near 10 including left and caudal posterior far left are set.

After setting the plurality of landmarks 200 from the medical image of the user scheduled for surgery in this way, the device performs the step of generating the A-space 300 expressed by the set plurality of landmarks 200 ( S100). That is, the A-space 300, which is a space defined by the plurality of landmarks 200, is modeled.

When the step S100 is described in more detail with reference to FIG. 8, the device first connects the cranial anterior center, cranial anterior right, cranial anterior left, cranial posterior center, cranial posterior right and cranial posterior left with a line, followed by the upper unit cervical vertebrae. The cranial edge line 310 of the bone is formed (S110).

In addition, the device forms the cranial center line 320 of the upper unit cervical vertebra, which is the left and right center line of the cranial plate 110 by connecting the cranial anterior center, the apex center, and the cranial posterior center with a line (S120).

Then, the device forms a height between the outer edge of the cranial center line 320 and the apex center with reference to the apex height 330 between the cranial center line 320 and the apex center (S130).

In addition, the device connects the caudal anterior near right, caudal anterior center, caudal anterior near right, caudal posterior near right, caudal posterior center and caudal posterior near left to a line to form a nose edge line 340 of the lower unit cervical vertebra. (S140).

In addition, the apparatus connects the caudal anterior center and the caudal posterior center with a line to form the nose center line 350 of the lower unit cervical vertebra, which is the left and right center line of the nose plate 120 (S150).

Then, the device measures the caudal anterior near right and caudal anterior far right, the caudal anterior near left and caudal anterior far left, the caudal posterior near right and caudal posterior far right, and the caudal posterior near left and caudal posterior far left After forming the nose wing line 360 of the lower unit cervical vertebrae with a line, the nose wing angle, which is the interior angle of the center vertex of a triangle with the nose wing line 360 as the hypotenuse, is checked (S160).

In addition, the device connects the caudal anterior near right, caudal anterior far right, caudal posterior far right and caudal posterior near right, and the caudal anterior near left, caudal anterior far left, caudal posterior far left and caudal posterior near left with a line By forming the caudal wing plate 370 of the lower unit cervical vertebra in a quadrangular shape, the A-space 300 is finally completed (S170).

At this time, the nose wing angle functions to be positioned at the left and right center of the cervical artificial disc 100 when the nose plate 120 is implanted in the unit cervical vertebrae, and the nose wing plate 370 is When the nose plate 120 is implanted in the unit cervical vertebra, it functions to prevent the cervical artificial disc 100 from rotating through friction with the surface of the unit cervical vertebra.

Referring back to FIG. 7 , after creating the A-space 300 through the step S100 , the device refers to the created A-space 300 , and a cranial for coupling to the upper unit cervical vertebrae. A step of forming the plate 110 is performed (S200), and a step of forming the nose plate 120 for coupling to the lower unit cervical vertebra is performed (S300), and then the cranial plate 110 and the nose plate are performed (S300). The steps of forming the artificial disk member 130 to be coupled between the 120 to support the longitudinal load are sequentially performed (S400).

That is, the device is provided within itself or by using an external 3D printer, the height most suitable for the A-space 300 (eg, the gap between the upper apex of the cranial plate 110 and the lower apex of the chordal plate 120 ) ), length (eg, the width of the major axis), width (eg, the width of the minor axis), shape (surface or edge), or a combination thereof, the cranial plate 110 , the chord plate 120 and the artificial disc member 130 . ) to form

In this case, when forming the cranial plate 110 through the step S200, the device needs to manufacture the cranial plate 110 in a size that can cover the upper unit cervical vertebrae. If the cranial plate 110 is designed to be small, bleeding occurs as the cranial plate 110 is depressed in the corresponding unit cervical vertebra to which it is attached or does not cover a portion of the unit cervical vertebra body. to be.

After forming the cranial plate 110 , the nose plate 120 , and the artificial disk member 130 through steps S200 to S400 , respectively, the apparatus is configured to provide the cranial plate 110 and the nose plate 120 . ) by combining the artificial disk member 130 between the ends of the production of the cervical artificial disk (100).

As such, the present invention uses a plurality of landmarks to model the space of A-space into which the cervical artificial disc will be inserted, and since it is possible to easily design a cervical artificial disc suitable for the space-modeled A-space, the cervical spine By modeling the A-space into which the artificial disk is inserted, it is possible to manufacture a cervical artificial disk customized for each patient, unlike the ready-made products.

In addition, since the present invention can precisely design the part of the plate in contact with the cervical vertebrae of the cervical vertebrae in accordance with the curvature of the cervical vertebrae, the present invention makes it easy to position the cervical vertebrae artificial disc in the surgical process, cutting bones to match the shape, etc. Additional measures can be suppressed as much as possible.

In addition, since the present invention can be applied not only to the cervical spine, but also to the design of artificial discs and artificial joints in various joint areas such as the lumbar spine, knee, and hip joint, it can be extended to other body parts.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, which are merely exemplary, and those of ordinary skill in the art can make various modifications and equivalent other embodiments therefrom. You will understand that it is possible. Therefore, the technical protection scope of the present invention should be judged by the following claims.

100: cervical artificial disc 110: cranial plate
120: caudal plate 130; absence of artificial disc
140: stopper 200: landmark
300: A-space 310: cranial edge line
320: cranial center line 330: apex height
340: nose edge line 350: nose center line
360: nose wing line 370: nose wing plate

Claims (10)

a cranial plate coupled to the upper unit cervical vertebrae;
a caudal plate coupled to the lower unit cervical vertebra; and
It includes; an artificial disk member coupled between the cranial plate and the chord plate to support the longitudinal load;
The cranial plate, the nose plate and the artificial disc member are cervical artificial disc, characterized in that formed based on the available space in which the cervical artificial disc represented by a plurality of landmarks will be implanted. The method according to claim 1,
The landmark is
A cranial anterior center, cranial anterior right, and cranial anterior left are set at the center and left and right of the front periphery of the upper unit cervical vertebrae, and a cranial apex is set at the center of the upper unit cervical vertebrae, and the upper unit cervical vertebrae The cranial posterior center, cranial posterior right, and cranial posterior left are set in the center and left and right of the posterior periphery of ;
The caudal anterior center, caudal anterior near right, caudal anterior far right, caudal anterior near left, and caudal anterior far left are set at the center and left and right of the anterior outer part of the lower unit cervical vertebrae, and the rear of the lower unit cervical vertebrae Cervical artificial disc, characterized in that the caudal posterior center, caudal posterior near right, caudal posterior far right, caudal posterior near left, and caudal posterior far left are set in the center and left and right of the outside. 3. The method according to claim 2,
The available space is
As a space defined by the plurality of landmarks, the space between two unit cervical vertebrae in which the cervical artificial disc is implanted is modeled (A-space),
a cranial edge line connecting the cranial anterior center, cranial anterior right, cranial anterior left, cranial posterior center, cranial posterior right and cranial posterior left to a line (cranial edge line);
a cranial center line that is a left and right center line of the cranial plate connecting the cranial anterior center, the apex center, and the cranial posterior center with a line;
an apex height that is the distance between the cranial center line and the apex center;
a caudal edge line connecting the caudal anterior near right, caudal anterior center, caudal anterior near right, caudal posterior near right, caudal posterior center and caudal posterior near left to a line (caudal edge line);
The caudal anterior center and the caudal posterior center are connected by a line to the left and right center lines of the caudal plate, the caudal center line;
The caudal wing connecting the caudal anterior near right and caudal anterior far right, the caudal anterior near left and caudal anterior far left, the caudal posterior near right and caudal posterior far right, and the caudal posterior near left and caudal posterior far left with a line line (caudal wing line);
a caudal wing angle, which is an interior angle of the vertex of the center of a triangle with the caudal wing line as the hypotenuse; and
The caudal anterior near right, caudal anterior far right, caudal posterior far right, and caudal posterior near right, and the caudal anterior near left, caudal anterior far left, caudal posterior far left, and caudal posterior near left are connected to the caudal wing in a square shape. Cervical artificial disc comprising a; plate (caudal wing plate). 4. The method according to claim 3,
The nose wing angle is,
When the nose plate is implanted in the unit cervical vertebrae, to be positioned at the left and right centers of the cervical artificial disc,
The nose wing plate is,
When the nose plate is implanted in the unit cervical vertebra, the cervical artificial disc is characterized in that the cervical vertebrae are not rotated through friction with the surface of the unit cervical vertebrae. The method according to claim 1,
The cranial plate is
By manufacturing the body of the upper unit cervical vertebra in a size that can cover the body, the cranial plate is prevented from being depressed in the corresponding unit cervical vertebra to which it is attached, or bleeding occurring due to failure to cover a portion of the unit cervical vertebra body. Cervical artificial disc, characterized in that to prevent. forming a cranial plate for coupling to the upper unit cervical vertebra;
forming a caudal plate for coupling to the lower unit cervical vertebra; and
Forming an artificial disk member coupled between the cranial plate and the chordal plate to support a longitudinal load;
The cranial plate, the chord plate and the artificial disc member are formed based on the available space in which the cervical artificial disc represented by a plurality of landmarks will be implanted. 7. The method of claim 6,
The configuration method is
Set the landmarks of the cranial anterior center, cranial anterior right and cranial anterior left in the center and left and right of the front outskirts of the upper unit cervical vertebrae, and set the landmarks of the cranial apex in the center of the upper unit cervical vertebrae, , setting landmarks of the cranial posterior center, cranial posterior right and cranial posterior left at the center and left and right of the rear outer part of the upper unit cervical vertebrae; and
Set landmarks of caudal anterior center, caudal anterior near right, caudal anterior far right, caudal anterior near left, and caudal anterior far left in the center and left and right of the front outer part of the lower unit cervical vertebrae, and the lower unit cervical vertebrae Setting the landmarks of the caudal posterior center, caudal posterior near right, caudal posterior far right, caudal posterior near left, and caudal posterior far left in the center and left and right of the back outskirts of the bone; Cervical spine artificial comprising further comprising; How to configure disks. 8. The method of claim 7,
The available space is
As a space defined by the plurality of landmarks, the space between two unit cervical vertebrae in which the cervical artificial disc is implanted is modeled (A-space),
forming a cranial edge line by connecting the cranial anterior center, cranial anterior right, cranial anterior left, cranial posterior center, cranial posterior right and cranial posterior left to a line;
connecting the cranial anterior center, the apex center, and the cranial posterior center with a line to form a cranial center line that is a left and right center line of the cranial plate;
forming a height between the outer edge of the cranial center line and the apex center with reference to an apex height between the cranial center line and the apex center;
forming a caudal edge line by connecting the caudal anterior near right, caudal anterior center, caudal anterior near right, caudal posterior near right, caudal posterior center and caudal posterior near left to a line;
connecting the caudal anterior center and the caudal posterior center to a line to form a caudal center line, which is a left and right center line of the caudal plate;
The caudal anterior near right and caudal anterior far right, the caudal anterior near left and caudal anterior far left, the caudal posterior near right and caudal posterior far right, and the caudal posterior near left and caudal posterior far left are connected with a line to wing the caudal wing forming a caudal wing line;
confirming a caudal wing angle that is an interior angle of a center-side vertex of a triangle with the caudal wing line as a hypotenuse; and
The caudal anterior near right, caudal anterior far right, caudal posterior far right, and caudal posterior near right, and the caudal anterior near left, caudal anterior far left, caudal posterior far left, and caudal posterior near left are connected with a line to form a caudal wing on a square shape. Forming a plate (caudal wing plate); by performing a cervical artificial disc configuration method, characterized in that formed. 9. The method of claim 8,
The nose wing angle is,
When the nose plate is implanted in the unit cervical vertebrae, to be positioned at the left and right centers of the cervical artificial disc,
The nose wing plate is,
When the nose plate is implanted in the unit cervical vertebrae, the cervical vertebra artificial disc construction method, characterized in that the rotation of the cervical vertebra artificial disc through friction with the unit cervical vertebra surface. 7. The method of claim 6,
In the step of forming the cranial plate,
By manufacturing the cranial plate to a size that can cover the body of the upper unit cervical vertebrae, the cranial plate is prevented from being depressed in the corresponding unit cervical vertebra to which the cranial plate is attached, or a part of the unit cervical vertebra is not covered. Cervical artificial disc construction method, characterized in that to prevent bleeding that occurs according to the.

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